ENGINE CONVERSION PARTS AT OFF ROAD SOLUTIONS
Order Online or Call 000-000-00003.4L Engine Swap Kits (5VZ-FE)
3.4L Engine Swap Wiring Harnesses (5VZ-FE)
3.4L Engine Swap Parts (5VZ-FE)
22R-E EFI Swap Harnesses (2.4L)
22R & 22RE Performance Engine Mounts & Frame Brackets
3RZ-FE Engine Swap Harnesses & Parts (2.7L)
3.4L Swap Kits
- Frequently Asked Questions regarding the 3.4L Conversion
- Technical Article regarding the Manual Trans or Auto Trans Conversion
- Installation Instructions for the 3.4L Conversion
The following kits are intended for '79-'95 Toyota trucks and 4Runners. When using these kits on vehicles originally equipped with the 22R, 22R-E, or 22R-TE engine, the ORS weld-on engine mounts or performance engine mounts are required (or customer fabricated engine mounts). 22R and 22R-E equipped vehicles will also require the use of a different transmission, see our technical article for details. Additional wiring charges and core charges may apply for 1990 or older models.
*Conversion kits are designed to provide swap parts less exhaust & intake components.
Core connectors are needed on 1985-1990 recipient vehicles. The connectors needed are where the body harness and engine harness from the stock engine connect, we only need the connectors from the engine harness side, leave the body harness connectors intact and on the harness. If you have any questions, please contact us prior to cutting the harness. If you need us to supply the core connectors, there will be a fee applied to cover the cost of us finding them for you (to be determined on an order by order basis). 85-88 22RE Core Picture
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3.4L Full Conversion Kit - Truck/4RunnerThis kit includes all NEW parts necessary for the conversion, plus some additional items that are nice to have. This kit is VERY complete and is designed to prevent the customer from going to the parts store 20 times during the conversion. These parts are package priced to save the customer money in the long run. We highly recommend the Full Kit, if you want to perform a clean job & want to replace all service parts.
Parts Included: Manual | Automatic
Manual Transmission Full Conversion Kit - ORS-EC020 - $1740.00 SALE! $1640.00
Auto Transmission Full Conversion Kit - ORS-EC022 - $2285.00 SALE! $2185.00
*Orders on engine conversion kits may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
1985-88 22RE Core Connector Needed
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3.4L Standard Conversion Kit - Truck/4RunnerThis kit is similar to the full kit but a few items were removed that can be re-used from the original vehicle or may not need replacement. This kit covers the majority of parts needed for 3.0L applications. 22R applications may also need an oil pan to supplement this kit.
Parts Included: Manual | Automatic
Manual Transmission Standard Conversion Kit - ORS-EC025 - $1185.00 SALE! $1085.00
Auto Transmission Standard Conversion Kit - ORS-EC026 - $1825.00 SALE! $1725.00
*Orders on engine conversion kits may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
1985-88 22RE Core Connector Needed
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3.4L Basic Conversion Kit - Truck/4RunnerThis kit includes the items exclusive to Off Road Solutions. These items are very helpful when doing the swap. Other parts will still be needed to complete the conversion. This kit is ideal for professional installers or those who have easy access to a parts source.
Parts Included: Manual | Automatic
Manual Transmission Basic Conversion Kit - ORS-EC027 - $960.00 SALE! $860.00
Auto Transmission Basic Conversion Kit - ORS-EC028 - $1460.00 SALE! $1360.00
*Orders on engine conversion kits may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
1985-88 22RE Core Connector Needed
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3.4L Swap Harnesses
3.4L Conversion Wiring Harness - Truck/4RunnerTakes all the wiring guess work out of a 3.4 liter conversion. This harness allows you to plug a 3.4 liter engine and computer straight into your '85 - '95 22R-E or 3.0L Toyota Truck or 4Runnner. Core charges may apply on some models.
Manual Transmission Wiring Harness - ORS-EC021 - $695.00 SALE! $595.00
Auto Transmission Wiring Harness - ORS-EC023 - $795.00 SALE! $695.00
*Orders may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
1985-88 22RE Core Connector Needed
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3.4L Conversion Standalone Wiring HarnessThis is a stand alone harness that takes care of all the wiring when installing a Toyota 3.4L V6 into any make or model. Great for carburated trucks, rock buggies, other makes. Core charges may apply on some models.
Manual Transmission Standalone Wiring Harness - ORS-EC024 - $775.00 SALE! $675.00
Auto Transmission Standalone Wiring Harness - ORS-EC029 - $850.00 SALE! $750.00
*Orders may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
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3.4L Swap Parts
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3.4L V6 Oil Pan Conversion Kit - ORS-EC088 $263.00Fits 2wd, 1979-85 4wd, or SAS vehicles
Tacomas, Tundras and 4Runners with the 3.4L V6 have an oil pan sump in the front of the engine. This prevents the installation of this engine into an older 2WD, '79-'85 4x4, or SAS’d vehicle. The parts needed are found on a 2WD T100 and convert the pan, sump, and dipstick setup to the rear. This kit includes all the parts needed to complete the rear sump swap-over. Genuine NEW Toyota parts include: oil pan, sump, sump gasket, pan gasket maker, dip stick, dip stick tube, tube adapter, and tube O-ring. Also included are a tap and plug to seal the original dip stick tube hole.
3.4L V6 Oil Pan Conversion Kit - ORS-EC089 $263.00Fits 1985-95 4wd IFS vehicles
Tacomas, Tundras and 4Runners with the 3.4L V6 have an oil pan sump in the front of the engine. This prevents the installation of this engine into an older '86-'95 4WD IFS vehicle. The parts needed are found on a 4WD T100 and convert the pan, sump, and dipstick setup to the rear and gives front differential clearance. This kit includes all the parts needed to complete the rear sump swap-over. Genuine NEW Toyota parts include: oil pan, sump, sump gasket, pan gasket maker, dip stick, dip stick tube, tube adapter, and tube O-ring. Also included are a tap and plug to seal the original dip stick tube hole.
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ORS 3.4L Dipstick Drill Guide - ORS-EC093 $45.00 SALE! $35.00As many may know, the '00 and newer versions of the Toyota 3.4L require a hole be drilled into the block to accept the dipstick tube during a rear sump oil pan installation, such as during an engine swap or live axle conversion.
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After tediously drilling many holes ourselves, we developed a drill guide to assist this operation. Simply bolt it on and drill your hole. Truly worth it's weight in gold......The kit includes the necessary sleeves and hardware. 3/8” drill bit NOT included.
$47 Retail. $35 with the purchase of an ORS Oil Pan Conversion kit, $25 with the Tacoma Solid Axle Coilover Kit, or $30 with the 3.4L Conversion Kit. Call for special price.
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ORS 3.4L Battery Harness - ORS-EC046 $150.00The original 3.4L battery cable harness can be used with this swap when the battery is kept in the engine bay. This harness is a great means for wiring the charging and starter systems. However, this harness is sometimes lost, severed, or too short. The ORS 3.4L harness is the perfect length for the swap and directly replaces the original battery harness.
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3.4L Conversion Power Steering High Pressure HoseNon ABS - ORS-EC031 - $89.95
ABS - ORS-EC032 - $79.95
3.4L Conversion Fuel High Pressure Hose - ORS-EC034 $44.95)
3.4L Conversion Lower Radiator Hose - ORS-EC036 $22.13)
3.4L Conversion Clutch Hose BracketToyota Exhaust Manifolds - ORS-EC050 - $15.00
Aftermarket Headers - ORS-EC051 - $15.00
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3.4L Conversion Crossover Pipe - ORS-EC070-OLDFits 2000 and Older
The OEM 3.4L exhaust uses a crossover pipe that ties the two manifolds together behind the engine, above the bell housing. This pipe, however, exits on the passenger side. It is more difficult to route the exhaust down the passenger side, due to brake and fuel lines, the transfer case, and the fuel tank. 3.4L Conversion Crossover Pipe This ORS custom crossover pipe is similar to the 3.4L OEM unit, but routes both banks to the driver side. This "dumps" the exhaust on the proper side of an older Toyota, keeping the undercarriage free of any crossover exhaust pipes. When ordering an ORS crossover pipe, note the year of the donor engine. This will denote the type of
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exhaust manifolds on the engine (either can be used). The manifold flanges (2) on the OEM crossover of your 3.4L must be provided, or a core charge will be incurred. Crossover pipe includes new manifold exhaust studs, exhaust nuts, manifold gaskets, and a weld-on flange with necessary gasket and hardware to continue the exhaust system.Sending in Core Flanges - ORS-EC070-OLD - $370.00* SALE! $350.00
No Core Flanges - ORS-EC070-OLD-CORE - $420.00 SALE! $400.00
*We will not make, or send out your crossover pipe until we have received your core flanges.
If you are unsure if yours is the older or newer style, please reference these pictures: Stock Manifold Comparison | Flange Comparison
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*Crossover pipe will not work with 3.4L manual transmissions without modification to the crossover.
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3.4L Conversion Crossover Pipe - ORS-EC070-NEW $370.00 SALE! $350.00Fits 2001 and Newer
The OEM 3.4L exhaust uses a crossover pipe that ties the two manifolds together behind the engine, above the bell housing. This pipe, however, exits on the passenger side. It is more difficult to route the exhaust down the passenger side, due to brake and fuel lines, the transfer case, and the fuel tank. 3.4L Conversion Crossover Pipe This ORS custom crossover pipe is similar to the 3.4L OEM unit, but routes both banks to the driver side. This "dumps" the exhaust on the proper side of an older Toyota, keeping the undercarriage free of any crossover exhaust pipes. When ordering an ORS crossover pipe, note the year of the donor engine. This will denote the type of
exhaust manifolds on the engine (either can be used). Crossover pipe includes new manifold exhaust studs, exhaust nuts, manifold gaskets, and a weld-on flange with necessary gasket and hardware to continue the exhaust system.If you are unsure if your is the older or newer style, please reference these pictures: Stock Manifold Comparison | Flange Comparison
*Crossover pipe will not work with 3.4L manual transmissions without modification to the crossover.
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ORS 3.4L Performance Engine Mounts - ORS-EC071 $449.00 SALE! $395.00We set out to design an indestructible set of engine mounts for the popular Toyota 3.4L V6 (5VZ-FE). Here is that set. These mounts utilize over-sized 2.5" polyurethane bushings and 5/8" grade 8 hardware. They are laser-cut from 1/4" steel and mig-welded. They completely bolt to the engine side, using the stock holes PLUS 2 additional mounting holes on each side. Their completely boxed construction makes them very rigid and the enlarged bolt pattern allows excellent shear resistance.
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These ORS mounts will eliminate almost all drivetrain "wrap", allowing for a faster throttle response and less drivetrain slop. They are also ideal for the 'wheeler who likes to turn his/her rig upside-down. Along with this, all "normal" drivetrain vibrations are translated to the cab a little more, so the customer will "feel" the engine a little more than with the Toyota mounts.
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These mounts are perfect for 3.4L engine swaps into anything from an older mini-truck to a rock buggy. This ORS mount set will fit all 3.4L V6 engines, front or rear oil sump. The basic mount set is for the motor side only and includes: 2 mounts, bushings, bushing sleeves, and all necessary hardware. Mounts are sold unpainted. Frame mounting brackets are available separately. Those with a race/rock buggy or wanting to fabricate their own frame brackets will only need the mount set (ORS-EC071).
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ORS 3.4L Performance Engine Mount Frame Bracket Set - ORS-EC072 $40.001979-85 4x4 and 4Runner
This weld-in bracket set includes 1/4" laser-cut mount tabs and gussets to install a 3.4L V6 into a '79-'85 4x4 using the ORS 3.4L Performance Engine Mount Set. Performance Engine Mounts sold separately.
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ORS 3.4L Performance Engine Mount Frame Bracket Set - ORS-EC073 $60.001986-95 4x4 and 4Runner
The '86-'95 Frame is unique due to the upper control arm mounts. The 3.4L Performance Engine Mounts require some frame cutting of the upper control arm mounts. This weld-in bracket set includes plates to cap the frame after trimming. The ORS '86-'95 Frame Bracket Set also includes 1/4" laser-cut mount tabs and gussets. Performance Engine Mounts sold separately.
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3.4L Conversion Engine Mounts - ORS-EC041 $75.00/pairWhen performing the 3.4L swap on a 22R equipped vehicle, these mounts are needed to prepare the frame for the V6 engine. The 22R OEM frame mounts are completely removed and these mounts are welded in place. Installation is simple and instructions are provided.
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22R-E Swap Harness
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ORS 22R to EFI Conversion Harness
Toyota built a legend when they built the 22R. They really got it right when they built the 22R-E. While neither version is very fast, Toyota sure built a reliable fuel injection system. The ORS EFI Conversion Harness is designed to help the rest of the world achieve the 22R-E status. In this circuit there is the ECU (computer), the engine harness, and the body (dash main) harness. Unfortunately for those who want to convert, Toyota "tangled" about 40% of the EFI circuit into the body harness. As one may guess, this 40% is a necessary part of the EFI circuit. Our harness is designed to replace the body harness section of the circuit. This makes for an easy installation into an older Toyota, rock buggy, or whatever ya got.
1989-95 P/U & 1990-95 4Runner Donor Fuel Injection - ORS-EC001 - $470.00
1985-88 P/U & 1985-89 4Runner Donor Fuel Injection - Sending in Core Connectors - ORS-EC002 - $520.00*
1985-88 P/U & 1985-89 4Runner Donor Fuel Injection - No Core Connectors - ORS-EC002-CORE - $570.00*
*There is a core charge of $50 on ORS-EC002 for the donor fuel injection body harness/connectors.
There are cores needed when performaing this swap to build your harness: List of Cores Needed
*Orders may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
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22R & 22RE Performance Engine Mounts and Frame Brackets
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22R & 22RE Performance Engine Mounts - ORS-EC010 $250.00We have designed an indestructible performance engine mount for the Toyota 22R & 22RE engines. These mounts are made of ¼” laser cut steel throughout, MIG welded, incorporate an oversized 2” poly bushing set and utilize grade 8 bolts. These mounts bolt directly to your engine block and mount to tabs that are welded on your frame*. They eliminate all OEM mounts on the engine block.
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These ORS mounts are much stronger than your factory mounts. They will eliminate almost all drivetrain "wrap", allowing for a faster throttle response and less drivetrain slop. They are also ideal for the 'wheeler who likes to turn his/her rig upside-down, or jump their rig. Along with this, all "normal" drivetrain vibrations are translated to the cab a little more, so the customer will "feel" the engine a little more than with the Toyota mounts. However, these mounts are still smooth enough for daily driving.
These engine mounts are great for buggy and custom applications along with use in stock 22R or 22RE equipped vehicles.
*frame tabs are sold separately and are available for 1979-85 frames, you will have to fabricate your own frame tabs for other years.
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1979-85 4x4 Frame Tabs for 22R & 22RE Performance Engine Mounts - ORS-EC009 $45.00These frame tabs allow for the installation of our 22R & 22RE performance engine mounts onto your 1979-1985 Truck or 4Runner. They are made out of ¼” laser cut steel and need to be welded onto your frame and bolt to the performance engine mount.
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3RZ Swap Harness
After years of perfecting our 3.4L swap we are proud to announce our new 3RZ wiring harnesses. Our harness will allow you to mate a 3RZ 2.7L from a Tacoma, 4Runner or T100 to your older Toyota or buggy. These are perfect for the person looking to complete this swap but not wanting to deal with the headache of "sorting out" the wiring.
As with most Toyota EFI systems, about 45% of the engine electrical circuit was placed in the main or "body" harness of anything with a 3RZ-FE engine. Using this main harness in a swap can be very difficult, frustrating and messy. The ORS harness is designed to replace this portion of the engine circuit in 3RZ swap.
This harness connects directly to the 3RZ-FE engine computer and engine harness. The ORS-EC101 also connects directly to your vehicle, making the wiring very simple. The ORS-EC100 is designed for something without an engine wiring circuit already in place, such as a rock buggy or carburated truck. Wire leads from this harness are connected to +, ground, and start signals, still a simple install.
*At this time we are only offering the harnesses in a manual transmission application.
3RZ 2.7L Conversion Wiring Harness Manual Transmission- ORS-EC101 $600.00Takes all the wiring guess work out of a 3RZ conversion. This harness allows you to plug a 3RZ engine and computer straight into your '85 - '95 EFI Toyota truck.
*There may be a core charge on some models, please call for more information.
1985-88 22RE Core Connector Needed
*Orders may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
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3RZ 2.7L Conversion Standalone Wiring Harness - ORS-EC100 $700.00This is a stand alone harness that takes care of all the wiring when installing a Toyota 3RZ into any make or model.
*There may be a core charge on some models, please call for more information.
*Orders may take up to 4 weeks to ship during our busy seasons due to the custom nature of the harnesses. All harnesses are built to order and we build them in the order that they are received.
3RZ Oil Pan Conversion Kit - ORS-EC150 $245.00This is an oil pan conversion kit to make a 3RZ engine work in vehicle equipped with a 22R/E or 3.0L from the factory. Please specify if your vehicle is 2 or 4 Wheel Drive, and if it has IFS or SAS front suspension.
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Return Policy (applies to all purchases): 15% restocking fee on all returns. No returns after 30 days. No returns on electrical parts or special orders.
Shipping Note: Shipping prices are valid for the United States only. Orders shipping elsewhere will incur extra shipping charges not included in the online total.
Parts pricing subject to change without notice.
